Can Frontosa live with Harlequin Rasbora? Not recommended
Preferred water chemistry differs — manageable but not ideal.
Side by side
| 🐡 Frontosa | 🐟 Harlequin Rasbora | |
| Adult size | 12" | 2" |
| Min tank | 75 gal | 15 gal |
| Temperature | 74–82°F | 72–80°F |
| pH | 7.8–9 | 6–7.5 |
| Temperament | Semi-aggressive | Peaceful |
Why
- Preferred water chemistry differs — manageable but not ideal.
- Frontosa is large or predatory enough to eat or harass Harlequin Rasbora.